First of all what type of site? For forums I personally suggest Invisionfree. (Soz ForumsVibe people, I just don't like it)
For anything else try Piczo or Tripod, they're quite easy to use.
If you want your own .com or .co.uk or whatever url that cost money so for my sites I change the link with some sites so they're smaller. Like s5.com rather than all the other stuff too.